A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end of the array in the case where a negative cache entry had been added to the mapping cache. This could cause the calling code to return those values into the process token that stores the group membership for a user. The highest threat from this vulnerability is to data confidentiality and integrity.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade samba-develUpgrade libsmbclient-develUpgrade libwbclient-devel | May 4, 2022 | May 5, 2021 |
| Alpine Linux | — | Upgrade samba | Mar 26, 2024 | May 5, 2021 |
| Amazon Linux Ami 2 | — | Upgrade libsmbclient-develUpgrade sambaUpgrade samba-develUpgrade libwbclientUpgrade samba-client-libsUpgrade samba-common-toolsUpgrade samba-winbind-krb5-locatorUpgrade samba-libsUpgrade samba-pythonUpgrade samba-testUpgrade samba-commonUpgrade samba-test-libsUpgrade ctdb-testsUpgrade samba-krb5-printingUpgrade libsmbclientUpgrade samba-debuginfoUpgrade samba-dc-libsUpgrade ctdbUpgrade libwbclient-develUpgrade samba-pidlUpgrade samba-clientUpgrade samba-common-libsUpgrade samba-dcUpgrade samba-winbind-clientsUpgrade samba-python-testUpgrade samba-winbind-modulesUpgrade samba-vfs-glusterfsUpgrade samba-winbind | Jul 2, 2021 | May 5, 2021 |
| Amazon_linux | — | Upgrade samba | Feb 19, 2022 | Apr 29, 2021 |
| Centos_linux | — | Upgrade samba-pythonUpgrade samba-debuginfoUpgrade samba-client-debuginfoUpgrade samba-winexeUpgrade samba-winbind-debuginfoUpgrade libwbclientUpgrade samba-vfs-glusterfsUpgrade samba-client-libs-debuginfoUpgrade samba-commonUpgrade samba-develUpgrade python3-sambaUpgrade samba-winbind-krb5-locatorUpgrade samba-krb5-printingUpgrade samba-common-toolsUpgrade samba-test-debuginfoUpgrade samba-libs-debuginfoUpgrade samba-winbind-clientsUpgrade samba-test-libs-debuginfoUpgrade samba-libsUpgrade python3-samba-testUpgrade samba-winbindUpgrade sambaUpgrade libsmbclientUpgrade libsmbclient-develUpgrade samba-winbind-modules-debuginfoUpgrade samba-krb5-printing-debuginfoUpgrade samba-common-libsUpgrade samba-winbind-clients-debuginfoUpgrade samba-winbind-modulesUpgrade libsmbclient-debuginfoUpgrade samba-dc-libsUpgrade ctdbUpgrade ctdb-debuginfoUpgrade samba-pidlUpgrade libwbclient-debuginfoUpgrade python3-samba-debuginfoUpgrade samba-vfs-glusterfs-debuginfoUpgrade samba-testUpgrade samba-winexe-debuginfoUpgrade ctdb-testsUpgrade samba-client-libsUpgrade ctdb-tests-debuginfoUpgrade samba-winbind-krb5-locator-debuginfoUpgrade samba-common-tools-debuginfoUpgrade samba-python-testUpgrade samba-test-libsUpgrade samba-common-libs-debuginfoUpgrade libwbclient-develUpgrade samba-clientUpgrade samba-dcUpgrade samba-debugsource | Jun 9, 2021 | May 5, 2021 |
| Debian | — | Upgrade samba | May 31, 2021 | May 5, 2021 |
| Freebsd | — | Upgrade samba412Upgrade samba414Upgrade samba413 | Nov 4, 2022 | May 1, 2021 |
| Gentoo Linux | — | Upgrade net-fs/samba. | May 28, 2021 | May 5, 2021 |
| Huawei Euleros 2_0_sp2 | — | Upgrade samba-commonUpgrade samba-common-libsUpgrade samba-libsUpgrade samba-winbind-clientsUpgrade samba-clientUpgrade samba-common-toolsUpgrade sambaUpgrade samba-pythonUpgrade libsmbclientUpgrade libwbclientUpgrade samba-client-libsUpgrade samba-winbindUpgrade samba-winbind-modules | Sep 16, 2021 | May 5, 2021 |
| Huawei Euleros 2_0_sp3 | — | Upgrade samba-pythonUpgrade samba-client-libsUpgrade samba-commonUpgrade libsmbclientUpgrade libwbclientUpgrade sambaUpgrade samba-winbindUpgrade samba-winbind-modulesUpgrade samba-libsUpgrade samba-common-libsUpgrade samba-clientUpgrade samba-common-toolsUpgrade samba-winbind-clients | Oct 26, 2021 | May 5, 2021 |
| Huawei Euleros 2_0_sp5 | — | Upgrade samba-clientUpgrade libsmbclientUpgrade samba-client-libsUpgrade samba-winbind-clientsUpgrade samba-common-libsUpgrade samba-winbind-modulesUpgrade samba-libsUpgrade libwbclientUpgrade sambaUpgrade samba-pythonUpgrade samba-commonUpgrade samba-winbindUpgrade samba-common-tools | Sep 7, 2021 | May 5, 2021 |
| Huawei Euleros 2_0_sp8 | — | Upgrade python3-sambaUpgrade samba-commonUpgrade samba-client-libsUpgrade libwbclientUpgrade samba-winbindUpgrade samba-krb5-printingUpgrade samba-winbind-krb5-locatorUpgrade sambaUpgrade samba-libsUpgrade ctdbUpgrade samba-testUpgrade samba-clientUpgrade samba-common-toolsUpgrade samba-test-libsUpgrade python2-sambaUpgrade samba-pidlUpgrade python3-samba-testUpgrade samba-winbind-clientsUpgrade samba-common-libsUpgrade samba-dc-libsUpgrade samba-winbind-modulesUpgrade ctdb-testsUpgrade python2-samba-testUpgrade libsmbclient | Aug 10, 2021 | May 5, 2021 |
| Huawei Euleros 2_0_sp9 | — | Upgrade libsmbclientUpgrade sambaUpgrade samba-winbind-clientsUpgrade samba-common-toolsUpgrade samba-libsUpgrade samba-clientUpgrade samba-winbindUpgrade samba-winbind-modulesUpgrade samba-commonUpgrade libwbclient | Aug 10, 2021 | May 5, 2021 |
| Oracle Solaris | — | Upgrade library/samba/libsmbclient to version 4.13.8-11.4.39.0.1.107.0 on Solaris 11.4Upgrade service/network/samba to version 4.13.8-11.4.39.0.1.107.0 on Solaris 11.4 | Nov 17, 2021 | May 5, 2021 |
| Oracle_linux | — | Upgrade samba-vfs-glusterfsUpgrade samba-pidlUpgrade samba-python-testUpgrade samba-pythonUpgrade samba-develUpgrade sambaUpgrade libsmbclientUpgrade samba-krb5-printingUpgrade samba-commonUpgrade samba-dcUpgrade samba-winbindUpgrade ctdb-testsUpgrade samba-testUpgrade libwbclientUpgrade libwbclient-develUpgrade ctdbUpgrade samba-test-libsUpgrade samba-winexeUpgrade python3-samba-testUpgrade python3-sambaUpgrade libsmbclient-develUpgrade samba-clientUpgrade samba-winbind-krb5-locatorUpgrade samba-winbind-modulesUpgrade samba-libsUpgrade samba-common-libsUpgrade samba-winbind-clientsUpgrade samba-client-libsUpgrade samba-dc-libsUpgrade samba-common-tools | Jun 10, 2021 | Apr 29, 2021 |
| Qnap Qts | — | Upgrade QNAP QTS to the latest version | Aug 4, 2025 | Jun 16, 2021 |
| Redhat_linux | — | Upgrade samba-test-libsUpgrade samba-test-debuginfoUpgrade samba-client-libsUpgrade samba-develUpgrade samba-common-tools-debuginfoUpgrade samba-winbind-krb5-locator-debuginfoNo solution existsUpgrade python3-sambaUpgrade sambaUpgrade samba-libs-debuginfoUpgrade samba-winexe-debuginfoUpgrade samba-debuginfoUpgrade ctdbUpgrade samba-commonUpgrade libsmbclient-develUpgrade samba-client-debuginfoUpgrade libsmbclient-debuginfoUpgrade samba-krb5-printing-debuginfoUpgrade libwbclientUpgrade samba-krb5-printingUpgrade samba-winbind-clients-debuginfoUpgrade samba-testUpgrade samba-libsUpgrade samba-pidlUpgrade samba-winbind-modules-debuginfoUpgrade samba-python-testUpgrade samba-winbind-krb5-locatorUpgrade samba-pythonUpgrade ctdb-tests-debuginfoUpgrade samba-client-libs-debuginfoUpgrade samba-dc-libsUpgrade samba-winbind-clientsUpgrade libsmbclientUpgrade python3-samba-testUpgrade samba-common-toolsUpgrade python3-samba-debuginfoUpgrade samba-clientUpgrade samba-test-libs-debuginfoUpgrade samba-winbindUpgrade samba-vfs-glusterfs-debuginfoUpgrade ctdb-testsUpgrade samba-dcUpgrade samba-winbind-modulesUpgrade samba-winexeUpgrade ctdb-debuginfoUpgrade samba-vfs-glusterfsUpgrade samba-debugsourceUpgrade samba-common-libsUpgrade samba-common-libs-debuginfoUpgrade samba-winbind-debuginfoUpgrade libwbclient-develUpgrade libwbclient-debuginfo | Jun 9, 2021 | May 5, 2021 |
| Rocky_linux | — | Upgrade samba-winbind-clientsUpgrade samba-winbind-krb5-locatorUpgrade samba-winbind-modulesUpgrade samba-winbind-debuginfoUpgrade ctdbUpgrade libsmbclientUpgrade samba-test-libsUpgrade samba-client-libs-debuginfoUpgrade python3-samba-debuginfoUpgrade samba-develUpgrade samba-libs-debuginfoUpgrade samba-test-libs-debuginfoUpgrade samba-common-tools-debuginfoUpgrade samba-winexeUpgrade samba-winbind-krb5-locator-debuginfoUpgrade samba-clientUpgrade samba-client-debuginfoUpgrade samba-common-libsUpgrade python3-samba-testUpgrade samba-common-toolsUpgrade samba-debugsourceUpgrade samba-krb5-printing-debuginfoUpgrade samba-winbind-clients-debuginfoUpgrade libsmbclient-develUpgrade samba-libsUpgrade libwbclient-debuginfoUpgrade samba-debuginfoUpgrade samba-krb5-printingUpgrade samba-client-libsUpgrade libsmbclient-debuginfoUpgrade sambaUpgrade samba-test-debuginfoUpgrade libwbclient-develUpgrade ctdb-tests-debuginfoUpgrade samba-winbindUpgrade samba-winbind-modules-debuginfoUpgrade samba-winexe-debuginfoUpgrade samba-common-libs-debuginfoUpgrade python3-sambaUpgrade samba-testUpgrade libwbclientUpgrade ctdb-testsUpgrade ctdb-debuginfo | May 5, 2022 | May 5, 2021 |
| Samba | — | Upgrade to Samba 4.12.15 or later.Upgrade to Samba 4.13.8 or later.Upgrade to Samba 4.14.4 or later. | Jun 11, 2021 | May 5, 2021 |
| Suse | — | Upgrade samba-libs-python3Upgrade samba-ldb-ldapUpgrade libsmbconf-develUpgrade samba-docUpgrade libdcerpc-atsvc0Upgrade samba-python3Upgrade libsamba-errors0Upgrade libtalloc2-32bitUpgrade libdcerpc-develUpgrade samba-client-libsUpgrade libsamba-credentials-develUpgrade libsamba-hostconfig0-32bitUpgrade libsamdb0Upgrade samba-ad-dcUpgrade ctdb-testsUpgrade libsamba-passdb0Upgrade libwbclient0-32bitUpgrade libndr-krb5pac0Upgrade libnetapi0Upgrade samba-winbind-32bitUpgrade ldapsmbUpgrade samba-libs-python3-32bitUpgrade libsmbldap2-32bitUpgrade samba-winbind-libs-32bitUpgrade samba-winbindUpgrade libdcerpc-binding0Upgrade samba-32bitUpgrade libsamba-policy0Upgrade sambaUpgrade libsmbldap0Upgrade libtalloc2Upgrade libdcerpc0Upgrade samba-dsdb-modulesUpgrade libndr-krb5pac-develUpgrade samba-pythonUpgrade libdcerpc-samr0-32bitUpgrade libtevent-util0Upgrade libnetapi-devel-32bitUpgrade libndr-nbt0Upgrade samba-ad-dc-libsUpgrade samba-winbind-libsUpgrade libndr-standard0-32bitUpgrade samba-gpupdateUpgrade libtdb1-32bitUpgrade ctdb-pcp-pmdaUpgrade libsamba-passdb0-32bitUpgrade samba-core-develUpgrade libtevent-util0-32bitUpgrade libwbclient-develUpgrade samba-cephUpgrade libndr-nbt-develUpgrade libndr-develUpgrade libndr-nbt0-32bitUpgrade libsmbldap-develUpgrade libndr1-32bitUpgrade libsamba-credentials0Upgrade libsmbldap2Upgrade samba-libs-32bitUpgrade libsamba-errors-develUpgrade libsamba-credentials0-32bitUpgrade libsmbldap0-32bitUpgrade libsamba-policy0-python3Upgrade libsmbconf0Upgrade libndr0Upgrade samba-client-32bitUpgrade libnetapi-develUpgrade libtevent0Upgrade libdcerpc0-32bitUpgrade libsamba-util0Upgrade libsamba-hostconfig-develUpgrade libsamba-passdb-develUpgrade samba-ad-dc-32bitUpgrade libldb1Upgrade libdcerpc-binding0-32bitUpgrade libsamba-util-develUpgrade libndr1Upgrade samba-krb-printingUpgrade libsamba-errors0-32bitUpgrade libndr-krb5pac0-32bitUpgrade libsamdb0-32bitUpgrade libsmbclient0Upgrade libsamdb-develUpgrade ctdbUpgrade libsmbclient-develUpgrade libsmbconf0-32bitUpgrade libndr0-32bitUpgrade libdcerpc-samr0Upgrade samba-libsUpgrade libdcerpc-samr-develUpgrade samba-libs-pythonUpgrade libndr-standard0Upgrade libwbclient0Upgrade libtdb1Upgrade samba-clientUpgrade libtevent0-32bitUpgrade libsamba-policy-develUpgrade libndr-standard-develUpgrade samba-develUpgrade libsamba-policy-python3-develUpgrade libnetapi0-32bitUpgrade libsamba-policy0-python3-32bitUpgrade samba-testUpgrade libsamba-util0-32bitUpgrade libsmbclient0-32bitUpgrade libsamba-hostconfig0Upgrade libtevent-util-develUpgrade samba-client-libs-32bit | Apr 30, 2021 | Apr 29, 2021 |
| Ubuntu | — | Upgrade sambaUpgrade samba (Ubuntu Pro) | Apr 30, 2021 | Apr 29, 2021 |
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